Playground apparatus

ABSTRACT

A swing frame assembly including a swing frame support assembly supporting elongate tracks. Trolleys are movably supported by the tracks and a swing is pivotally suspended by the trolleys. Included in the support assembly are an intermediate support assembly and end stabilizing assemblies, each of which is provided with direct ground engaging members. Braces interconnect these members. A lift bar is disposed in the path of travel of the mounting for the swing.

O Unlted States Patent 1151 3,674,262

Tomalinas, Jr. 1 July 4, 1972 [54] PLAYGROUND APPARATUS 3,376,599 4/1968 Singer 1. l6/87.6 [72] lnventor: William R. Tomalinas, Jr. Wilkes-Barre, 338323 g g 52 2,731,073 1/1956 Tonne ..272/85 7 R th-A 3] Ass1gnee 0 mencan, lnc W11kes Barre, Pa OTHER PUBLICATIONS [22] 1971 Popular Science,June, 1970, pp. 96- 97 [21] App1.No.: 204,519

Primary Examiner-Richard C. Pinkh-am A 1 1E Th t B 52 us. c1 ..212/ss,24s/430,104/95 f [51] Int. Cl. ..A63f 7/06 [58] Field of Search ..273/85, 86, 89, 87, 88, 90, 57 ABSTRACT A swing frame assembly mcludmg a swmg frame support as- [56] References Cited sembly supporting elongate track s. Trolleys are movably supported by the tracks and a swmg 1s plvotally suspended by the UNITED STATES PATENTS trolleys. lncluded in the support assembly are an intermediate support assembly and end stabilizing assemblies, each of 1,548,535 Lydecker which is p i with direct g d, g g g members 116801970 8/1928 Dam "272/89 Braces interconnect these members. A lift bar is disposed in 2,307,141 1/1943 Ladd ...104/81 the path ofu-avel Ofthe mounting for h Swing 2,448,325 8/1948 Poorman, Jr. ...l04/8l 2,083,574 6/1937 Mott ..272/85 11 Claims, 5 Drawing Figures PLAYGROUND APPARATUS BACKGROUND OF THE INVENTION This invention relates to playground apparatus of the type including a swing mounted for travelling as well as pivotal movement. More particularly, this invention relates to such an apparatus provided with a novel frame assembly for support ing the travelling swing.

As will be appreciated, equipment of this type 'is often designed to be employed outdoors. Although in such an environment it is preferred to utilize the equipment on relatively flat surfaces, it will be readily apparent that terrain slope variations or irregularities are often encountered.

It would, therefore, be desirable to provide for a travelling swing assembly including a support frame assembly with limited flexibility particularly suitable for limited accomodation of the terrain upon which it is utilized.

' It has been recognized that during use of travelling swing equipment, forces are generated which may have a tendency to tip the apparatus about its ends, or, at times, to induce a sidewise swing of the apparatus, or sometimes both. As such, provision for limited flexibility consistant with desirable terrain accomodation may be thought to be inconsistant with such rigidity as would be desired for resistance of tipping and swaying effects associated with forces generated during use.

It would, therefore, be particularly desirable to provide for limited terrain accomodation without unduly sacrificing the ability of the travelling swing assembly to resist tipping and swaying.

At the same time it would be desirable to provide, in conjunction with terrain accomodation and resistance to tipping and swaying, an economical swing frame assembly characterized by relative ease of assembly and disassembly.

In the past, a variety of types of recreational equipment providing for travelling and pivotal movement of a swing have been proposed. Some of these proposals are exemplified in Lydecker US. Pat. No. 1,548,535; Ladd US. Pat. No. 2,307,141; Poorman U.S. Pat. No. 2,448,325, and pages 96, 97 and 113 of a June 1970 Popular Science publication. Although such equipment may be desirable for some purposes, it may not prove entirely acceptable for a number of reasons.

For example, devices of the type disclosed in the Poorman patent and the Popular Science article may be somewhat limited in the terrain upon which they may be employed insofar as they include longitudinally extending ground engaging members in the support frame carrying the travelling swing.

Although it may be considered desirable to entirely dispense with such members in favor of direct ground engagement by upwardly extending members of a travelling swing frame assembly, a loss of rigidity in either the sidewise or longitudinal sense may result. For example, in the devices disclosed in the Ladd patent and the Lydccker patent, the ends of the frame assembly are only interconnected by the longitudinally extending members on which the travelling unit rides.

Other problems with satisfying the seemingly inconstant criteria imposed by suitable flexibility and suitable rigidity, as well as the criteria imposed by economy and provision for assembly and disassembly, may be envisioned.

OBJECTS AND SUMMARY OF THE INVENTION It is, therefore, a general object of the invention to provide a novel playground apparatus of the type including a swing form mounted for travelling as well as pivotal movement.

It is another object of the present invention to provide a novel travelling swing assembly which obviates or minimizes disadvantages of the sort previously noted.

Recognizing the desirability of providing limited flexibility suitable for limited accomodation of variety in the terrains upon which a travelling swing assembly may be utilized, and further recognizing problems associated with resistance of generated forces which may tend to induce tipping or swaying of the assembly, it is a particular object of the present invention to provide a novel travelling swing assembly that provides limited flexibility amenable to terrain accomodation without unduly sacrificing the ability of the travelling swing assembly to resist tipping or swaying.

It is a further object of the present invention to provide a novel and economical travelling swing assembly of that type.

It is yet another object of the present invention to provide such a novel travelling swing frame assembly wherein relative ease of assembly and disassembly is enhanced.

A preferred embodiment of the invention intended to accomplish at least some of the foregoing objects comprises a swing frame assembly including a swing frame support assembly and elongate track means supported by the support assembly. A travelling swing form assembly including trolley means and body supporting means, e.g. a conventional swing, is also provided.

The trolley means is movably supported by the track means for longitudinal movement therealong, while the body supporting means which is pivotally suspended by the trolley means is also so movable.

The swing frame support assembly comprises an intermediate support means assembly and longitudinally spaced first and second stabilizing means assemblies. Included in the intermediate support means assembly is an upper intermediate support means extending transversely of the track means intermediate the ends thereof and connected thereto. The intermediate support means assembly also includes first and second, direct ground engaging side support means in the fonn of forwardly and rearwardly inclined side support portions.

The stabilizing means assemblies are disposed oppositely with respect to the intermediate support means assembly and each includes an upper stabilizing support means extending transversely of the track means and connected thereto. Laterally spaced, and direct ground engaging, first and second leg support means of the stabilizing means assemblies are disposed on opposite sides of the track means for supporting the upper stabilizing support means.

First and second brace means respectively interconnect the first and second stabilizing means assemblies with the intermediate support means assembly adjacent but spaced from the bottom of the direct, ground engaging side support means and leg support means. The leg support means are each disposed laterally inwardly of the side support means of the intermediate support means assembly, and are each inclined to a ground engaging position forward of the ends of the track means and laterally inward of the side support means, while also being inclined laterally outwardly of the track means. The brace means are generally U-shaped and connected to the side support means laterally inwardly of the swing frame support assembly.

The track means may comprise first and second track means each supporting a trolley, with the swing independently pivotally suspended by each trolley through flexible means such as two chains. Lift bar means connected to the leg support means of one of the stabilizing means assemblies extends transversely of the path of travel of both chains for substantially simultaneous engagement therewith.

The trolley means may comprise bearing means including bearing shaft means grooved generally centrally thereof. Roller bearing means are journaled on opposite sides of the shaft. Pivotal suspension of the swing is provided utilizing hook means clinched in the shaft groove so as to restrain the hook means against substantial axial movement along the bearing shaft.

Other objects and advantages of the present invention will become apparent from the subsequent detailed description of a preferred form thereof in conjunction with the accompanying drawings in which like numerals indicate like elements and in which:

THE DRAWINGS FIG. 1 is a perspective view of a preferred form of a travelling swing assembly according to the present invention;

FIG. 2 is an exploded assembly view of the swing frame assembly of FIG. 1;

FIG. 3 is a cross-sectional view of a swing supporting track and trolley taken along line 33 of FIG. 1;

FIG. 4 is an elevational view of a preferred bearing arrangement suitably employed in conjunction with the apparatus of FIG. 1; and

FIG. 5 is a side elevational view depicting the interconnection of members of the intermediate support assembly of FIG. 1.

DETAILED DESCRIPTION With reference now particularly to FIGS. 1 and 2, a preferred form of travelling swing assembly according to the present invention may be more fully understood.

The travelling swing assembly 10 includes elongate track means 12 providing for to and fro movement of a travelling swing form assembly 14. Preferably, two such track means 12 are provided, with the track means 12 being supported in generally parallel arrangement by a swing frame support assembly.

This swing frame support assembly includes an intermediate support means assembly 16 and longitudinally spaced first and second stabilizing means assemblies 18 disposed on opposite sides of the intermediate support means assembly 16. Preferably these longitudinally spaced stabilizing means assemblies 18 function as end support means in a manner hereinafter more fully described.

First and second brace means 20 are also provided for interconnecting the stabilizing means assemblies 18 to the intermediate support means assembly 16.

In the illustrated form of the present invention, first and second trolley means 22 (see FIGS. 2 and 3) are respectively movably supported by the track means 12 for longitudinal movement therealong. A swing form 24 of the swing assembly 14 is suspended by the trolley means 22 and movable therewith longitudinally of the track means 12. The support for the swing form 24 is such as to render the swing form 24 generally pivotal with respect to trolley means 22.

This may be accomplished through conventional flexible chains 26 of the swing form assembly 14. These chains 26 support the swing form 24 and are themselves pivotally supported on the trolley means 22 through conventional chain hooks 28 (see FIG. 3).

It will, however, be appreciated that certain advantages of the present invention may be realized where other types of swing form assemblies (i.e. lawn chairs, rocking horses or the like) are employed with rigid pivot arrangement. Also, a single track in certain instances may be utilized.

The intermediate support means assembly 16 includes an upper support bar 30 extending transversely of the tracks 12 intermediate the ends thereof. As illustrated, the transversely extending upper support bar 30 may be generally perpendicular to the longitudinal extent of the tracks 12.

Generally aligned apertures are respectively provided in the upper support bar 30 and the tracks 12 so as to enable the tracks 12 to be suspended from that bar 30. This suspension may be accomplished through suitable securing means (indicated at 36 in FIG. 1) which may take the form of bolts extending through the aligned apertures and coupled to nuts provided to complete the suspension of the tracks 12 by the bar 30. As will hereinafter become apparent, the projection of the nuts into the channel defined by the tracks 12 is sufficiently small so as to avoid interference with the trolley means 22 during travel of the swing form assembly 14.

Also included in the intermediate support means assembly 16 are side support bars 38, with two such bars 38 being disposed adjacent opposite ends of the upper support bar 30. The bottoms of the side support bars 38 constitute ground engaging elements, and the side support bars on each side of the top support bar 30 are inclined downwardly away from that top support bar in opposite directions. Preferably the inclination of the side support bars 38, as illustrated, is not only toward the longitudinal extremities of the tracks 12, but also slightly laterally outward of those tracks.

As will be appreciated, the intermediate support means assembly 16 is thus constituted by a conventional A-frarne assembly. To complete this assembly, the individual side support bars 38 of the pairs on opposite sides of the travelling swing frame apparatus 10 are interconnected by means of a generally horizontally disposed brace 40. The braces 40 are disposed preferably above the midpoints of the side support bars 38. The upper ends of the side support bars 38 are socketed by means of a bracket assembly 42 (see also FIG. 5).

The bracket assemblies 42 include generally T-shaped members defining channels for receiving the side support bars 38 and the upper support bar 30. It will be appreciated that the channels so defined are contoured in complementary relationship with respect to the contour of the side support bars and the top support bars, i.e. in the illustrated embodiment the channels are generally arcuate to accomodate the generally cylindrical configuration of the bars.

The leg portions of the generally T-shaped members 44 may be provided with ears 46 (FIG. 5) to complete a socketing arrangement for reception of the side support bars 38. Thus, upon socketing receipt of these side support bars 38, suitable securing means 36 (such as a nut and bolt arrangement) may be employed to provide for gripping engagement of the side support bars 38 in the defined sockets.

The upper portions of the generally T-shaped members of the bracket assemblies 42 are provided with apertures cooperable with additional securing means 36. Generally aligned apertures in the top support bar 30 are also provided to lock the top support bar in its socketed position between the mutually facing channels defined by the T-shaped members. The ends of the T-shaped members may be secured together through additional securing means 36 cooperating with apertures.

It will be appreciated that in the illustrated embodiment the travelling swing frame assembly 10 is an integral unit itself, and therefore, the generally T-shaped members meet at their outer extremities to define a cap-like structure indicated at 48 (FIG 1). It will, however, be appreciated that the travelling swing frame assembly 10 may be a portion of overall playground apparatus including additional swing and other equipment. In such an arrangement, the generally T-shaped members may be suitably configured to accomodate interconnection with additional support bars much in the same manner as the top support bar 30 is interconnected thereto.

Each of the first and second stabilizing support means assemblies 18 disposed on opposite sides of the intermediate support means assembly 16 includes a generally inverted U- shaped section. In the preferred form of the apparatus as illustrated, the U-shaped sections are comprised of a U-shaped upper portion 52 and interconnected struts 54 projecting from the legs of the upper portion 52. It will, however, be appreciated that other arrangements are envisioned.

The upper U-shaped portions 52 each include a transverse supporting section 55 extending generally parallel to the support bar 30 of the intermediate support means assembly 16. These transversely extending support portions 55 are preferably employed to suspend the track means 12 adjacent the ends thereof utilizing securing means 36 in a manner similar to that described in connection with the intermediate support bar 30.

The leg portions 56 of the upper U-shaped portions 52 and the interconnected support struts 54 preferably project in an inclined fashion beyond the ends of the tracks 12, and ground engaging support is provided by the bottoms of the support struts 54. As illustrated, it is preferred that the generally parallel support struts 54 also be inclined generally laterally outwardly of the tracks 12. However, this projection is to a lesser extent than that of the projection of the side support bars 38. In other words, the end stabilizing support assemblies 18 terminate laterally inwardly of the A-frame provided by the intermediate support means assembly 16.

As earlier noted, the brace means 20 are employed to interconnect the intermediate support means assembly 16 with the stabilizing support means assemblies 18. The brace means 20 may also take a generally U-shaped form, but one disposed in a generally horizontal posture. In the illustrated embodiment, this generally U-shaped form is provided by generally L- shaped tubular members 58 facing one another and respectively receiving a generally straight tubular member 60. These tubular members 60 may be provided with reduced portions adjacent the ends thereof to facilitate telescoping within the outermost legs of the L-shaped members 58. It will, however, be appreciated that the brace means can be a one-piece member (not shown) for added stability.

Adjacent, but upwardly spaced from the bottom ends of the support struts 54 the L-shaped members 58 and the telescoping received member 60 are secured thereto through suitable securing means 36. In addition, the L-shaped members are secured to the side support bars 38 adjacent, but upwardly of the bottom ends thereof by such securing means 36. Preferably the attachment of the L-shaped members 58 to the side support bars 38 is accomplished with the L-shaped members on the inner (with respect to the lateral extent of the frame) portions of these side bars 38.

Adjacent the upper end of the stabilizing support means assemblies 18, additional support may be provided by means of short braces 62. These braces 62 are provided with ears 64 projecting from a body 66 at suitable angles to facilitate connection between the tracks 12 and the stabilizing support means 18 as illustrated. Such connection may be accom plished through suitable securing means 36.

In operation, a child may commence swinging on the swing form assembly 14 adjacent one end of the track means 12 in a manner such as that normally employed in connection with fixed position pivoting swings. Forward swinging movement will be followed by translation of the swing form assembly 14 longitudinally of the track means 12, with the trolley means 22 sliding in the track means 12.

With reference to FIG. 3, it may be seen that the track means 12 is shaped to define mutually facing generally L shaped channels for reception of a roller bearing of the trolley means 22. The ends of the channels in the tracks 12 are provided with suitable means for arresting translation of the swing form assembly 14.

This may be accomplished by blocks 70 mounted within the tracks 12 at opposite ends thereof. Mounting of the blocks 70 is accomplished by securing means 36, one set of which may be utilized to secure the braces 62 to the track 12 at a location spaced slightly longitudinally inward of the struts 54.

At the end of travel along the track 12, the blocks 70 arrest the translatory motion of the swing form assembly 14, but the momentum results in upward pivoting of the swing form assembly. According to the present invention, the angular velocity of this upward swinging may be increased over that which would otherwise result through the use of a lift bar 72. This lift bar may be connected to one stabilizing support frame 18 in any suitable manner, preferably adjacent the location of the track braces 62. As will be appreciated, the lift bar 72 engages each of the chains 26 and decreases the radius of swinging are which the pivoting portion of the swing form assembly 14 may describe. This decrease in the radius of curvature is accompanied by an increase in angular velocity, since the angular velocity is inversely proportional to the radius of curvature at any given tangential velocity attributable to the momentum during swing travel.

The increased angular velocity of lift induced by the lift bar 72 engaging both chain supporting means 26 may aid in teaching the user to engage in pumping action before the return of the swing assembly 14 along the tracks 12 toward the other end thereof. As will be appreciated, engagement of both chains 26 by the lift bar 72 occurs substantially simultaneously, thereby decreasing the chance of significant twisting of the swing form assembly 14 during the lift portion of the swing travel cycle.

When the swing form assembly 14 reaches the ends of the tracks 12 and the stop blocks come into play, the forces generated which might otherwise tend to tip the entire travelling swing assembly 10 about its ends are significantly resisted by the stabilizing assemblies 18. Sidewise tipping is also resisted at the same time through the interconnection of these stabilizing support assemblies 18 to the intermediate support assembly 16 by means of the brace assemblies 20. It will also be appreciated that since the brace assemblies 20 function to transmit forces from the stabilizing support means 18 back to the intermediate support means 16, the brace assemblies also aid in resisting tipping about the ends of the unit.

During assembly of the described travelling swing assembly 10, the relative pivotal nature of the connections by all the securing means 36 provides flexibility to permit limited accomodation of terrain irregularities by slight adjustments.

It may also be noted that in cases of outdoor installation, the ends of the side support bars 38 and the end support struts 54 may penetrate the ground to further enhance stability by permitting the brace assemblies 20 (located slightly upwardly of the ends of the bars 38 and 54) to also function as ground engaging members.

Of added importance is the relatively tight fitting nature of the brace assemblies 20 which is generally squeezed between the side bars 38 on opposite sides of the unit. In this fashion, further rigidity may be provided.

Overall rigidity is enhanced by reason of the fact that the generally tubular bars 30 and 38 of the intermediate support assembly 16 have a diameter of about 2 inches, but economy and ease of assembly is facilitated by reason of the fact that the brace means 20 and stabilizing means assemblies 18 are comprised of generally tubular bars. of about one inch in diameter.

During travel of the swing assembly, the tendency for any binding of the trolley means 22 in the track means 12 may be minimized through the provision of the preferred bearing assembly illustrated in FIG. 4. This bearing assembly includes roller bearings 74 joumaled on the ends of a shaft 76 and constrained against longitudinal movement toward one another along the shaft. Significantly, the shaft is grooved in the middle as indicated at 78 to receive the previously identified chain hook 28 in clinched fashion. The chain hooks 28 are thus laterally constrained against movement along the shafts 76 to further resist any tendency toward binding by reason of sidewise forces imposed upon the swing form assembly 14 by the user.

Although the invention has been described in connection with a particular preferred form thereof, it will be appreciated by those skilled in the art, that additions, substitutions, modifications, and deletions, may be made without departing from the spirit and scope of the invention as defined in the appended claims.

What is claimed is:

1. Playground apparatus comprising a swing frame assembly including:

a swing frame support assembly, and elongate track means supported by said swing frame support assembly;

a travelling swing form assembly including:

trolley means movably supported by said track means for longitudinal movement therealong; and

body supporting means pivotally suspended by said trolley means and movable therewith longitudinally of said track means;

said swing frame support assembly comprising:

an intermediate support means assembly including:

upper intermediate support means extending transversely of said track means intermediate the ends thereof and connected thereto, and

first and second, direct ground engaging side support means for supporting said upper support means on laterally opposite sides of said track means; longitudinally spaced first and second stabilizing means assemblies disposed oppositely with respect to said intermediate support means assembly and each including: upper stabilizing support means extending transversely of said track means and connected thereto; laterally spaced and direct ground engaging first and second leg support means disposed on opposite sides of said track means for supporting said upper stabilizing support means of said stabilizing means assemblies; and first and second brace means for interconnecting said intennediate support means assembly respectively with said first and second stabilizing means assemblies adjacent but spaced from the bottom of said direct ground engaging side support means and leg support means. 2. Apparatus according to claim 1 wherein: said ground engaging leg support means of each of said stabilizing means assemblies are each disposed laterally inwardly of said direct ground engaging side support means of said intermediate support means assembly; and wherein said ground engaging leg support means of each of said stabilizing means assemblies are inclined to a ground engaging position forward of the ends of said track means. 3. Apparatus according to claim 2 wherein: said ground engaging leg support means of each of said stabilizing means assemblies are each inclined to said ground engaging positions disposed laterally inward of said side support means of said intermediate support means assembly; and wherein said first and second brace means are each generally U- shaped and are connected to said side support means of said intennediate support means assembly laterally inwardly of said swing frame support assembly. 4. Apparatus according to claim 2 wherein: said ground engaging support means of each of said stabilizing means assemblies are each inclined laterally outwardly of said track means to said ground engaging positions. 5. Apparatus according to claim 4 wherein: 7 said ground engaging leg support means of each of said stabilizing means assemblies are each inclined to said ground engaging positions disposed laterally inward of said side support means of said intermediate support means assembly; and wherein said first and second brace means are each generally U- shaped and are connected to said side support means of said intermediate support means assembly laterally inwardly of said swing frame support assembly. 6. Apparatus according to claim wherein: each of said ground engaging side support means of said intermediate support means assembly comprises forwardly and rearwardly inclined side support portions; and wherein said first and second brace means are connected respectively to said forwardly and rearwardly inclined side support portions. 7. Apparatus according to claim 2 wherein: each of said ground engaging side support means of said intermediate support means assembly comprises forwardly and rearwardly inclined side support portions; and wherein said first and second brace means are connected respectively to said forwardly and rearwardly inclined side support portions. 8. Apparatus according to claim 1 wherein: said elongate track means comprises first and second track means;

said trolley means comprises first and second trolley means respectively movably supported by said first and second track means; said body supporting means is independently pivotally suspended by each of said first and second trolley means through first and second flexible means connected to said body supporting means; and wherein the apparatus further includes: lift bar means connected to said direct ground engaging first and second leg support means of one of said stabilizing means assemblies, and extending transversely of and in the path of travel of both of said first and second flexible means for substantially simultaneous engagement therewith. 9. Apparatus according to claim 1 wherein: said trolley means comprises bearing means including bearing shaft means provided with a groove generally centrally thereof; and first and second roller bearing means joumaled on opposite ends of said bearing shaft means; and wherein said body supporting means is pivotally suspended by said trolley means by hook means clinched in said groove to restrain said hook means against substantial axial movement along said bearing shaft means. 10. Apparatus according to claim 1 wherein: said upper intermediate support means and said direct ground engaging side support means are generally tubular bars; and wherein said brace means and said stabilizing means assemblies are comprised of generally tubular bars having a diameter less than that of said tubular bars of said upper intermediate support means and said side support means. 1 1. Playground apparatus comprising: a swing frame assembly including:

a swing frame support assembly, and first and second, generally parallel elongate track means suspendable from said swing frame support assembly; a travelling swing form assembly including:

first and second trolley means movably supportable by said first and second track means for longitudinal movement therealong; body supporting means pivotally suspendable from said first and second trolley means for movement therewith longitudinally of said first and second track means; said swing frame support assembly comprising:

intermediate support means assembly including:

a top support bar extendable transversely of said first and second track means intermediate the ends thereof,

means operable to suspendingly support said first and second track means from said top support bar,

first and second side support bars operable to support said top support bar on laterally opposite sides of said track means, and

first and second connecting means, connectable to said top support bar and operable to provide for adjustable socketed reception of said side support bars of said first and second side support means in forwardly and rearwardly inclined, direct ground engaging relationship;

first and second, generally U-shaped end stabilizing means assemblies positionable adjacent opposite ends of said intermediate support means assembly and each including:

an upper stabilizing bar support portion extendable transversely of said first and second track means;

leg support bar portions operable to support said upper stabilizing bar support portions,

means operable to suspendingly support said first and second track means from said upper stabilizing bar support portions adjacent opposite ends of said track means with said leg support bar portions disposed laterally inwardly of said side support bars in a direct ground engaging position and disposed inward of 

1. Playground apparatus comprising a swing frame assembly including: a swing frame support assembly, and elongate track means supported by said swing frame support assembly; a travelling swing form assembly including: trolley means movably supported by said track means for longitudinal movement therealong; and body supporting means pivotally suspended by said trolley means and movable therewith longitudinally of said track means; said swing frame support assembly comprising: an intermediate support means assembly including: upper intermediate support means extending transversely of said track means intermediate the ends thereof and connected thereto, and first and second, direct ground engaging side support means for supporting said upper support means on laterally opposite sides of said track means; longitudinally spaced first and second stabilizing means assemblies disposed oppositely with respect to said intermediate support means assembly and each including: upper stabilizing support means extending transversely of said track means and connected thereto; laterally spaced and direct ground engaging first and second leg support means disposed on opposite sides of said track means for supporting said upper stabilizing support means of said stabilizing means assemblies; and first and second brace means for interconnecting said intermediate support means assembly respectively with said first and second stabilizing means assemblies adjacent but spaced from the bottom of said direct ground engaging side support means and leg support means.
 2. Apparatus according to claim 1 wherein: said ground engaging leg support means of each of said stabilizing means assemblies are each disposed laterally inwardly of said direct ground engaging side support means of said intermediate support means assembly; and wherein said ground engaging leg support means of each of said stabilizing means assemblies are inclined to a ground engaging position forward of the ends of said track means.
 3. Apparatus according to claim 2 wherein: said ground engaging leg support means of each of said stabilizing means assemblies are each inclined to said ground engaging positions disposed laterally inward of said side support means of said intermediate support means assembly; and wherein said first and second brace means are each generally U-shaped and are connected to said side support means of said intermediate support means assembly laterally inwardly of said swing frame support assembly.
 4. Apparatus according to claim 2 wherein: said ground engaging support means of each of said stabilizing means assemblies are each inclined laterally outwardly of said track means to said ground engaging positions.
 5. Apparatus according to claim 4 wherein: said ground engaging leg support means of each of said stabilizing means assemblies are each inclined to said ground engaging positions disposed laterally inward of said side support means of said intermediate support means assembly; and wherein said first and second brace means are each generally U-shaped and are connected to said side support means of said intermediate support means assembly laterally inwardly of said swing frame support assembly.
 6. Apparatus according to clAim 5 wherein: each of said ground engaging side support means of said intermediate support means assembly comprises forwardly and rearwardly inclined side support portions; and wherein said first and second brace means are connected respectively to said forwardly and rearwardly inclined side support portions.
 7. Apparatus according to claim 2 wherein: each of said ground engaging side support means of said intermediate support means assembly comprises forwardly and rearwardly inclined side support portions; and wherein said first and second brace means are connected respectively to said forwardly and rearwardly inclined side support portions.
 8. Apparatus according to claim 1 wherein: said elongate track means comprises first and second track means; said trolley means comprises first and second trolley means respectively movably supported by said first and second track means; said body supporting means is independently pivotally suspended by each of said first and second trolley means through first and second flexible means connected to said body supporting means; and wherein the apparatus further includes: lift bar means connected to said direct ground engaging first and second leg support means of one of said stabilizing means assemblies, and extending transversely of and in the path of travel of both of said first and second flexible means for substantially simultaneous engagement therewith.
 9. Apparatus according to claim 1 wherein: said trolley means comprises bearing means including bearing shaft means provided with a groove generally centrally thereof; and first and second roller bearing means journaled on opposite ends of said bearing shaft means; and wherein said body supporting means is pivotally suspended by said trolley means by hook means clinched in said groove to restrain said hook means against substantial axial movement along said bearing shaft means.
 10. Apparatus according to claim 1 wherein: said upper intermediate support means and said direct ground engaging side support means are generally tubular bars; and wherein said brace means and said stabilizing means assemblies are comprised of generally tubular bars having a diameter less than that of said tubular bars of said upper intermediate support means and said side support means.
 11. Playground apparatus comprising: a swing frame assembly including: a swing frame support assembly, and first and second, generally parallel elongate track means suspendable from said swing frame support assembly; a travelling swing form assembly including: first and second trolley means movably supportable by said first and second track means for longitudinal movement therealong; body supporting means pivotally suspendable from said first and second trolley means for movement therewith longitudinally of said first and second track means; said swing frame support assembly comprising: intermediate support means assembly including: a top support bar extendable transversely of said first and second track means intermediate the ends thereof, means operable to suspendingly support said first and second track means from said top support bar, first and second side support bars operable to support said top support bar on laterally opposite sides of said track means, and first and second connecting means, connectable to said top support bar and operable to provide for adjustable socketed reception of said side support bars of said first and second side support means in forwardly and rearwardly inclined, direct ground engaging relationship; first and second, generally U-shaped end stabilizing means assemblies positionable adjacent opposite ends of said intermediate support means assembly and each including: an upper stabilizing bar support portion extendable transversely of said first and second track means; leg support bar portions operable to support said upper staBilizing bar support portions, means operable to suspendingly support said first and second track means from said upper stabilizing bar support portions adjacent opposite ends of said track means with said leg support bar portions disposed laterally inwardly of said side support bars in a direct ground engaging position and disposed inward of said side support means and inclined laterally outwardly of said track means and forwardly of the ends thereof; and first and second, generally U-shaped brace means operable to interconnect said leg support bars of said first and second stabilizing means assemblies adjacent the ends thereof respectively to said forwardly and rearwardly inclined side bars. 